InChI=1/C16H28N4O/c1-5-9-20(11-10-19(3)4)15-12-13(17)7-8-14(15)16(21)18-6-2/h7-8,12H,5-6,9-11,17H2,1-4H3,(H,18,21)/p+1/fC16H29N4O/h18-19H/q+1 914E6FB17AC0E8E5